Holder for machine-tools.



cl/#7165666, Jig/2,

R. E. GOLTON.

HOLDER FOR MACHINE TOOLS.

APPLICATION IILED JULY 8, 1909.

7a rd ROSTO E. COLTON, OF EASTHAMPTON, MASSACHUSETTS, ASSIGNOR T COLTONGOM- IBINAIION TOOL COMPANY, OF CHESTER, VERMONT, A CORPORATION OFMAINE.

HOLDER FOR MACHINE-TOOLS.

Specification of Letters Patent.

Patented July 12, 193W.

Application filed July 8, 1909. Serial No. 506,558.

following is a specification. p This invention relates to holders formachine tools, such, for instance, as the tools of engine lathes, andhas for its object to provide a holder capable of mounting a pluralityof tools for simultaneous operation on a piece of work and forinterchangeably carrying tools of a diflerent character for operationsof various sorts. That is, lnore specifically my object is to provide aholder with provisions for carrymg at one time two or more tools ofsimilar character together with provisions for substituting one or moretools of a difierent character with a minimum expenditure of time.

An embodiment of my invention, which at the present time, I consider apreferable one, is illustrated in the drawings in which, 1

Figure 1 represents an elevation of the tool holder. Fig. 2 represents aplan View of the same.' Fig. 3 is an elevation of the post forming partof the holder. Fig. 4 is an elevation of the-complete holder With-thetools in place therein as seen from the left of Fig. 1. Fig. 5 is anaxial section on the line 55 of Fig. 2. Fig. 6 is an elevation showingthe post of the holderand the parts associated therewith for clampingthe holder upon a tool slide and securing the tools in the holder. Fig.7 is a longitudinal section of the complete holder on the line 77 ofaccompanying .Fig. 2. Fig. 8 is a plan View of the parts below the line88 of Fig. 5. Fig. 9 is a view similar to Fig. 8 showing the manner ofsubstituting one tool for another of different character. Fig. 10'is aperspective View of one of the clamping collars forming part of the toolholder. Fig. 11 is a perspective view of the entire tool holder with acutting-off tool in place. Fig. 12 is an elevation similar to Fig. 4,but showing the manner of mounting a cutting-oil tool in the holder.

Referring to the drawings, the holder is shown as consisting of twoclamping collars or members a b which are placed upon the post a andrest upon a base plate or pedestal d, which also surrounds the post andis adapted to rest upon the ordinary tool slide or tool holder e of alathe or other machine tool. The post 6 and associated rings or collarsare secured upon the slide 6 by means of a bolt f, the head 9 of whichis contained in the usual undercut groove 7:. of the tool slide, and theshank of which is screwed into an internally threaded socket 2' in thepost. A nut j is threaded upon the upper end of the post and serves adouble purpose It between the base plate or pedestal (Z and the head 9of the bolt f, and also of crowding the tool clamps a and 6 together.These clamps are furnished with provisions for se- '65 of clamping thelips of the tool slide groove curing tools therein in a firm andaccurate manner, such provlsions conslstmg of channels formed partiallyin each clamp in the ,sides or faces thereof Which lie nearest to oneanother.

The channels in the collar 6 are represented by the letters 70 and Z,and are substantially counterparts reversed of complemental channels inthe collar (1. These channels receive the shanks of tools m and n, whichare conveniently turning tools, and are adapted to be usedsimultaneously upon the same piece of work. In order that the tools orcutters may be separated from one another, the channels is and Z are onopposite sides of the center or axis of the disks or clamps a and b, andthese channels intersect the outer portions of the post 0. In order thatthe tools may lie in the channels and past the post, the latter isformed at its opposite sides with recesses 0 and p, which arealined'with the channels 70 and Z when the collars and posts have theproper angular adjustment. When the shanks of the tools are set in thechannels of the collars, the latter are clamped down by the nut j,whereupon the tools are firmly gripped and secured immovably in thecorrect position.

In order that tools of difierent characters than the tools m and n maybe mounted in the same holder, such, for instance, as out ting-off toolswhich have greater depth and less thickness than turning tools, I formin the bottoms of the channels k and Z the grooves g and 7 respectively,which are of less width than the channels and extend some distancebeyond the bottoms thereof. These grooves are adapted to receive toolssuch, for instance, as the cutting-oft tool 8 shown in Fig. 12, or thelarger cutting-oil tool 26 shown in Figs. 9 and 11. These grooves areformed in the channels against the walls of the latter which lie nearestto the post, so that one wall of each of the shallower channels alsoforms a wall for the deeper groove, and the grooves are solocated thatenough stock is left in the outer portion of the clamps to support thetools with the required degree of rigidity.

In the embodiment of the invention here illustrated, the grooves areshown as parallel to each other, but such an arrangement is notessential, and it is within the contemplation of my invention that theybe inclined to one another for a number of reasons, as illustrated andexplained in a companion application, filed concurrently herewith, andbearing the Serial No. 506,557.

From the fact that the bolt f is independently engaged with the toolpost 0, it follows that the latter may be clamped to the tool slideindependentl of the clamping means for the individua tools. Thus, whenthe post is once set in position, the tool clamps a and b may beloosened and the tools adjusted, removed or replaced, and reclamped,without shifting or loosening the entire holder.

I claim:

1. A tool holder, comprising a pair of clamps and a post upon which saidclamps are placed, the clamps having complemental channels in theiradjacent faces to receive the shank of a tool, and said channels beinggrooved to contain a deeper and narrower tool than that fitting thechannel.

2. A tool holder, comprising a post and clamps surrounding said post,one of said clamps having channels on different sides of the center ofthe post, and said channels havmg narrow grooves in their bottoms, thegroove of one channel being deeper than that of the other.

3. A lathe tool holder arranged to carry interchangeably a number ofvarious tools, comprising a pairof clamping collars and a post on whichsaid collars are mounted, said collars having channels to contain theshanks of tools, parts of such channels being shallow relatively totheir width and other parts being{ relatively deep, whereby tools havingshan s varying in depth and width may be secured therein.

4. A lathe tool holder arranged to carry interchangeably a number ofvarious tools, comprising a pair of clamping collars and a post on whichsaid collars are mounted, said collars having channels on opposite sidesof their center to contain the shanks of tools, which channels aregrooved to a greater depth on the side thereof nearest to the center ofthe clamps.

5. A lathe tool-holder arranged to carry interchangeably a number ofvarious tools and to be adjustably clamped upon a tool slide orcarriage, comprisin a post, a clamp ing bolt threaded into said post,clamping collars surrounding said post and having complemental groovesto receive a tool or tools, and a clamping nut threaded upon said postfor crowdin said collars together.

- 6. A lathe tool-hol er comprising a post having a recess in its side,clamping collars surrounding said post and havlng complemental channelsin their adjacent faces' adapted to contain a tool shank and mov- 'ableinto alinement with the recess in said post, means on said post forcrowding said clamps toward one another, and an independently adjustableclamping bolt for securing t e said post upon a tool slide or equivalentholder.

In testimony whereof I have affixed my signature, in presence of twowitnesses.

' ROSTO E. COLTON. Witnesses:

CHARLES G. BUTTERFIELD, TRAUGOTT W. VEr'rERLmG.

